Fig. 8. UCNP-based nanocomposites for CO gas therapy. (a) A photo-activated CO releasing moiety nanocarrier for CO release using NIR light.37 (b) Lipid-encapsulated UCNPs for NIR-mediated CO release for cancer gas therapy.100 (c) Vitamin E-facilitated CO pro-drug nanomedicine for efficient light-responsive combination cancer therapy.101 Adapted from ref. 37 with permission from Royal Society of Chemistry, copyright 2019; adapted from ref. 100 with permission from Elsevier Ltd, copyright 2019; adapted from ref. 101 with permission from Royal Society of Chemistry, copyright 2021.
